ANSWERS: 5

Sorry, I meant y=mx+b.

5x+4y=20 [subtract 5x from both sides] 4y=5x+20 [divide it all by 4] y=5/4x+5

You start with 5x + 4y = 20 And you want to isolate 'y' on the left side of the equation, so subtract 5x from each side 5x + 4y  5x = 20  5x Now you have 4y on the left, so divide each side by 4 to get y all alone. (4y) / 4 = (205x) / 4 So we're left with y = 20/4  5x/4 20/4 is just 5, so it's y = 5x/4 + 5. Tada.

OMG! Thanks!

5X+4Y=20 5(x)+4y=20 4Y=20 4Y/4=20/4 Y=5 (0,5) 5X+4Y=20 5X+4(0)=20 5X=20 X=4 (4,0)
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